If that is, or is anything like, a Total Systems Gemini Accelerator for the SE, you're going to need the init/whatchamacallit OS level tweak to allow the SE to address the add'l Ram as Virtual Memory. IIRC, those cards could do something like 32 MB of RAM on the SE and, ISTR, they were available with either an '020 OR an '030 on board!

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Yes, the PCB looks like it was designed to be really multi-purpose. The DIP headers underneath suggest that one could also socket it into a Plus. My init says:

GemStart 3.0 for the 20MHz Gemini

Use FPU for SANE (off)

Instruction Cache (on)

Data Cache (on)

Startup Animation (on)

Memory: Has 4MB of 32-bit RAM

Has 1MB SIMMs

Options: Has 68030 built-in MMU

ROM copied to RAM

Hey, ROM in RAM means this is a "new world" SE! :lol: It also has a button marked "fool applications", which opens a file browser. I guess this is to patch for applications which might not like the 030. I wish my Atari Falcon had this feature. I haven't bothered to add more RAM or FPU, because I have not used the SE as much as I'd like, I have no money, and it runs nicely as it is now. But I probably will upgrade it someday. My next big upgrade was supposed to be SSD hard drive, but it hasn't worked out yet.

Is the Brand Name on a sticker or etched away with the traces on the PCB? The Gemini Accelerator was a brand name for a board from an OEM and available from other mail order houses as well. It was paired with either a Lapis Card for Grayscale or Panasonic's SE Interface Card for B&W. I've still got the manual and the NuBus card for my Panasonic 19" TPD. What connector is on the Lapis Card? Panasonic's Single Bit NuBus Video Interface Card for the PanaPro M19M2 has a DB-9 connector. It's sitting in front of me, date etched on the card is 1988.

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On the board is etched: TOTAL SYSTEMS - QUESSE COMPUTER CO INC - PCB #80042 - MADE IN USA - COPYRIGHT 1989 There is a sticker with: S/N 04232

It appears that I have temporarily lost the display card, doubtless in one of the many silver ESD bags around here. IIRC it says "Lapis" on the card and had a DB-9 output. I do not have any viable monitors to test it with.

edit: check for The Gauge Series in the Peripherals Links Project, that utility suite will do most everything the System Profiler can do and much more.

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Thanks for the tip. Next time I am doing an install-fest for the SE, I might well try this.